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Driving device, tactile sensation providing apparatus, and driving method

a technology of providing apparatus and driving device, which is applied in the direction of generator/motor, mechanical vibration separation, instruments, etc., can solve the problems of power consumption and noise generation, and achieve the effect of realizing tactile sensation

Active Publication Date: 2021-12-02
TAIYO YUDEN KK
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a device that can provide a realistic tactile sensation to users. It uses a high-frequency wave that is modulated with a low-frequency wave to sensory receptors in human skin. This allows the user to have a tactile sensation that is not possible with other methods. The device can be controlled using a driving device and provides a more realistic sensory experience.

Problems solved by technology

In addition, many transducers are used to output ultrasonic waves for providing a tactile sensation, which causes problems such as power consumption thereof and noise generation.

Method used

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  • Driving device, tactile sensation providing apparatus, and driving method
  • Driving device, tactile sensation providing apparatus, and driving method
  • Driving device, tactile sensation providing apparatus, and driving method

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[0097]The driving device according to the above embodiment generated a driving signal wave and supplied the driving signal wave to the piezoelectric elements of the vibration generating device (see FIG. 12). A finger was brought into contact with the vibrating member, and a tactile sensation due to the vibrations of the vibrating member was observed. The driving signal wave was generated by modulating the high-frequency wave with the second modulated wave as described above. The second modulated wave is obtained by using the first low-frequency wave as the first modulated wave to modulate the amplitude of the second low-frequency wave with the first modulated wave.

[0098]Table 3 below is a table showing the tactile sensations due to vibrations generated when the frequency of the high-frequency wave is 25 kHz, the frequency of the second low-frequency wave is 200 Hz, and the frequency of the first low-frequency wave is changed. Table 3 shows an index α, which is (the frequency of the ...

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Abstract

A driving device generates a driving signal and outputs the driving signal to a piezoelectric element, the driving signal having a waveform obtained by using, as a first modulated wave, a first low-frequency wave having a frequency of 1 Hz or more and less than 100 Hz, using, as a second modulated wave, a waveform obtained by modulating an amplitude of a second low-frequency wave having a frequency of 100 Hz or more and 300 Hz or less with the first modulated wave, and modulating a high-frequency wave having a frequency of 20 kHz or more and 100 kHz or less with the second modulated wave.

Description

BACKGROUND ART[0001]The present disclosure relates to a driving device of a spatial vibration generating device, a tactile sensation providing apparatus, and a driving method, by which a tactile sensation is generated in a space using ultrasonic vibrations.[0002]Various actuators are used in tactile function devices that provide tactile sensations to users. For example, an electromagnetic actuator such as an eccentric motor or a linear resonant actuator is used for a notification function. Moreover, in addition to these electromagnetic actuators, piezoelectric actuators are also used for a force feedback function.[0003]In recent years, the tactile sensation technology has been advanced, and a technology by which tactile sensations such as a “rough” texture and a “smooth” texture can also be provided has been developed (e.g., see Japanese Patent Application Laid-open No. Hei 08-314369). Moreover, the three-dimensional tactile sensation technology that provides a tactile sensation in ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H02N2/00G06F3/01
CPCH02N2/001G06F3/016H02N2/008H02N2/067B06B1/0637B06B1/0276B06B2201/70B06B2201/55H10N30/802
Inventor ISHII, SHIGEOKISHIMOTO, SUMIAKISHIMIZU, HIROYUKIGOTO, TAKAYUKINAMIKAWA, YUICHI
Owner TAIYO YUDEN KK
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